Liquid elevating device



LIQUID ELEVATING DEVICE Filed Oct. 6, 1928 NLM Patented Aug. 4, 1931 PATENT OFFICE ANDREW C. VOOD, OF CHICAGO, ILLINOIS LIQUID ELEVATING DEVICE Application filed October 6, 1928.

My invention belongs to the general class of devices for elevating or conveying liquids and more particularly to an apparatus for conveying or supplying fiuid or liquid to meet a required demand. The same is particularly adapted for drawing gasoline 01 like iiuids from a supply tank and supplying the same to the carburetor of a combustion engine as required, but the same, however, may be used wherever found applicable. The invention has among its objects the production of a simple, compact, inexpensive, reliable, efficient and satisfactory device of the kind described. It has particularly as an ob ject the production of a pump suitable for elevating liquids, which pump is automatically rendered operative or inoperative or its action varied depending upon the amount of liquid required to meet the demand. It has particularly as an object the production of a device of the kind described that is free of complicated parts and whichvdoes not require fine, adjustment. A feature of my inl" vention is that it comprises a pump for elevating liquid into a receptacle, the plunger of this pump being automatically retained against reciprocation by means controlled by the liquid level within the receptacle when a predetermined quantity of liquid is in the receptacle.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given. Y

To this end my invention lconsists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.`

Referring now to the drawings which illustrate certain preferred embodiments of my invention:` Y. g y Fig. 1 'shows a vertical sectional view througha device embodying my invention;

Fig. 2 is a sectional view taken on the line 2-2 of Fig..1; v Fig..3 is a sectional view taken on the line 3- 3 Of Fig. l;

- Fig. 14 is a vertical fragmentary sectional Serial No. 310,771.

Secured tothe bottom wall within the receptacle 1() is a cylindrical shell 14 open at both y ends and positioned over a circular aperture in the bottom wall 11. Threaded through this aperture is a tubular member 15 which is enlarged outside of the casing 10 as shown at 16 and eXteriorly threaded as at 17 to facilitate the attachment of a conduit. A valve seat member 19 is disposed Within the enlarged'portion 16 and serves to seat a valve member 20 which is slidable therein. able packing 18 and a gasket 18 are provided to render liquid-tight the opening in the wall 11 receiving the member 15.

A cylindrical member 21 closely envclops the cylindrical member 14 and is slidable thereover, serving in eect as a plunger. A plate 23 is secured to the top ofthe cylindrical member 21 and has an aperture 24 therein seating a ball valve 25, this valve being loosely retained by means of a Wire cage 26.

Secured to the plate 23 is a rod 27 which is pivotally connected to lever 28. This lever is pivotally secured at one end to a bracket 30 and at its other end to a connecting rod 31. As will be clearly seen in Fig. 1, the connecting rod 31 is slotted as at 32 and the lever 28 carries at its end a pin 33 which slidably engages in the slot 32. A helical spring 34 is secured to the pin 33 and to a lug 35 on the connecting rod 31. The connecting rod 31 may be pivoted to any suitable crank 37 for reciprocating it and the lever 28, this crank being attached to the casing 10 by suitable means. e

Secured to the bottom portion 11' of the casing 10 is a vertical support 40, the upper portion of which pivotally carries a bell crank lever 41. One arm 42 of the bell cra-nk lever supports a float member 43, formed of cork or other light material, or cor 1` ising a hollowreceptacle, or of any other c esrable con Iif Suiti cock-*50.

struction; while the other arm 44 of the lever is disposed in such a manner that when the float is elevated to a desired point this arm will lie in the path of the projecting flange 45 of the plate 23, as shown dotted in F ig. 1.

A tubular member 47 passes through the bottom plate 11 and may be so designed as to facilitatel the attachment ot a conduit thereto Voutside of the casing 10. An auxiliary tubular member 48 communicates with the bottoi of the casing 10 passing through the bottom plate 11 and lying substantially fiush with the inner surface thereof and is connectedto the portion of the tubular member 47 lying outside of the receptacle by means of a pet The operation of the device abovedescribed is'substantially as follows: The crank 37 will normally be l,connected with the operating parts of an internal combustion engine and willbe rotated continuously, thus reciprocatingfthe. connecting rod 31, the lever 28, the

Y rod 127, andthe cylindrical member 21.

ltffwill be seen that .the .cylindrical member 21 acts substantiallyas a plunger in cooperationwith,thestationary cylinder 14 and uponV theupvvard movement vof the cylindrical member v21 a vacuum will be created within bothof these .cylindrical members, v,thus drawingfuel, past the valve 20, through the tubular member 15 and into the cylindrical members. {Uponthe 'downward movement .of the cylindrical ,member 21 theV valve 2O willbe forced against its seat andany fluid within the cylindrical members, either gas or liquid, Will be lforced through the apertures 24, ydisplacing the'ball valve 25.. .Whensuiicient liquid has been drawn linto the `casing 10 to rise above the level of `the tubular lmember 47 such liquid will pass'out of the casing through lthe last mentioned tubular member thence to the carburetor (not shown) of the engine. vllVhen a predetermined maximum quantity ofliquid has been pumped into the casing 10 the Hoat member 43 will be elevated o n thebell crank lever 41 around its pivot thus moving the arm 44y into the path v 'of the fiange'45, as shown in dotted lines in however, theliquid within .the casing 10 has dropped beyond the given maximum, Ythe -lioat 43will fall, thus removing the arm 44 from .the path of the flange 45 and again per-V mitting the cylindrical member 21 to reciprocate, and thus again pumping liquid into the casing. Y

The auxiliary tubular member 48 and pet cock 50 lare of particular value in case of an emergency, as in cases where the supply of fuel is inadvertently exhausted. In such a case, it Will be seen thatthe quantity of fuel disposed in the casing 10 below the level of the tubular member 47 may be utilized as a reserve.

, The tubularmember 15 is .elevated above the level yofthe bottom member 11 in order that the air space Within the member 14 may be reduced when the plunger is operating, and the pumping efficiency consequently increased. Y

Referring now to Fig. 4, it will be seen that in this embodiment the lever mechanism is slightly modified. In this case the connecting rod 31y is not slotted but is pivotally connected to the lever 2 8 which, asin the other embodiment, is pivotally connected to the rod 27.` However, in this instance the lever' 28 bears at .one end against a helical spring 4carried by la support 62 and when the cylindrical member V21 is reciprocating the lever 28 pivots against this helical spring 60. Vhen, however, the cylindrical member vis retained against reciprocation by the arm 44 1 the .connecting rod 3 1 and lever 28 continue to reciprocate, theend of the lever 28 being resiliently urged against the spring 60.

In the embodiment shown in Figure 5 all of the parts are substantially similar to the corresponding parts shown in the other embodiments except that the yieldable connection between the plunger actuating mechaniemand lthe plunger is 'somewhat modified. 1n this embodiment the rod 27 is directly connected to the cylindrical member 21 at one end and is pivoted at its other end to the lever 28e, this lever being pivot-ally connected to the bracket 30a. At the opposite end of the lever 28a is aV pintle 57 upon which is pivoted a rod '52, a .connecting rod 53 being pivoted'to the rod 52' as at 54. It will be understood that the connecting rod 53 is connected toa crank or other suitable reciprocating mechanism (not shown). It will be noted that the end ofthe rod 52.is prolonged beyond the pintle-50 to form a lug 55am-d that acoilcd spring-56 is mounted about the lug and pintle 50 and so disposed that the downward movement of the .connecting rod and the rod 52 will be against the resilient resistance `0fv the spring 56, Hence, when the liquid within the casing 10"is below the predetermined maximum vlevel and the arm 44 is out of the path ofthe Aange 45 reciprocation ofthe connecting rod 53 will be "transmitted through the rod 52 and lever V28a to the plunger 21, thus pumping liquid intothe device. lVhen, however, the liquid has reached the redet-.ermined maximum level and the floatv notshown) has moved the arm 44 into the path of the flange 45,'thus retaining the plungerv 21 against reciprocation, downward movement of the connecting rod 53 will-result merely in rotating theA rod52 about the pintle 50 and increasing the tension of the spring 56. Obviously, the spring Will be of such a tension that the lever 28a and n the rod 52 Will be rotated substantially as a unit about the pivot on the bracket 30a When the plunger 2l is not retained.

Having thus de-scribed my invention, it is obvious that various immaterial modifications may be made in the same Without departing from the spirit of my invention; hence I do not Wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1. In a device of the class described and in combination, a receptacle provided with an inlet and an outlet, a cylindrical member communicating With said inlet, a reciprocable tubular member operatively related to said cylindrical member for pumping fluid into said receptacle, a plate having a laterally extending flange secured to said tubular member, a valve in said plate, and means operatively related to said fiange and controllable by the iuid level in said receptacle for retaining said tubular member against reciprocation When a predetermined quantity of fluid is in said recept-acle.

2. In a device of the class described and in combination, a receptacle provided with an inlet and an outlet in the bottom thereof,

- a cylindrical member communicating with said inlet, a reciprocable tubular member surrounding said cylindrical member and operatively related thereto for pumping fluid into said receptacle, a plate having a laterally extending flange secured adjacent the top of said tubular member, a valve in said plate, means adapted to engage said ange and controllable by the fluid level in said receptacle for retaining said tubular member against reciprocation when a predetermined quantity of fiuid is in said receptacle, a continuously operated driving member outside said receptacle, and means operatively connected to said plate and said driving member including a spring adapted to yield as said driving member is operated and when said iiuid level controlled means is in engagement with said liange.

In testimony whereof, I have hereunto signed my name.

ANDREW C. WOOD. 

